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<br />\ <br />, I <br />I <br /> <br />a. Routing of sewage flows. <br />b. Wet well sizing. <br />c. Dry pit layout. <br />d. Pump selection. <br />e. Potential size and layout of building, wet well and dry pit. <br />f. Lift station siting including generator. <br />g. Potential utility conflicts and resolution of same. <br />h. Alignment alternatives. <br />i. Construction phasing necessary to keep the existing lift station in service. <br /> <br />Weare proposing to summarize the maj or design issues in memorandums for submittal to City <br />for review and comments. Currently, we are proposing memorandums for the following issues: <br />wet well sizing; dry pit layout and pump selection; lift station siting; and alignment alternatives. <br />We will meet with the City staff to discuss the memorandums and formulate the final design. <br /> <br />TASK C - Plans and Specifications <br /> <br />1. Tetra Tech will prepare construction plans, technical specifications and cost estimates for the <br />project All plans and specifications shall be prepared in accordance with the applicable <br />provisions of: Standard Specifications for Public Works Construction (Green Book); National <br />Electric Code; Uniform Building Code; and City of Santa Ana Standard Plans and <br />Specifications. <br /> <br />2. The City shall provide the contract documents and <'boilerplate" portion of the Specifications. <br />Tetra Tech will provide the technical specifications portion of the special provisions and a list of <br />Bid Items. Specifications will be prepared in Microsoft Word format. Final submittal to the <br />City shall include a computer disc, as well as a hard copy of the Specifications. <br /> <br />3. Plans will be CAD generated and the final plans will be provided in Micro Station format. Final <br />submittal to the City shall include Mylar Plan sheets as well as electronic copies of the CAD <br />files. All plans shall be drawn at a minimum of scale of 1" = 20' unless otherwise approved by <br />the City. <br /> <br />4. The Plans and Specifications will address, but not be limited to, the following items of work: <br /> <br />a. Excavation, construction and backfill for the below ground portion of the station (wet well <br />and dry pit). Design parameters will be established for wet well volume, pump cycling, <br />solid disposition, pump suction configuration and submergence. Odor and grease control <br />systems will be provided for the wet well. <br /> <br />b. Three new booster pumps and motors equipped with VFD will be provided. The control <br />system shall be designed to operate with the City's existing SCADA system. Installation <br />and programming of the new PLC. will be included in our scope of work. An in-line <br />grinder shall be installed upstream of the pumps to disintegrate rags, solids, and other <br />foreign objects that would clog or foul the pumps. <br /> <br />c. All new electrical equipment, controls and wiring will be designed. Equipment failure <br />and intrusion alarms will be provided. Tetra Tech will provide an interface with City's <br />SCADA system. Schematics and ladder diagrams will be provided for all electrical <br />systems and instrumentation. All electrical requirements will be coordinated with SCE. <br /> <br />CITY OF SANTA ANA <br />Sail Lorenzo Sewel' Lift Station. <br /> <br />TETRA TECH, INC. <br />7 <br />